Crossbow Bolt Loader Pliers Radial Handle Geometry
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Solution Overview
Problem
Crossbow loading mechanisms often pose safety risks as the bowstring can inadvertently release during the loading process, potentially causing injury to the user's hands due to the stored kinetic energy.
Innovation Solution
A bolt-loading apparatus comprising two rotatable members forming a hollow cylinder to securely hold the bolt, ensuring the user's hands remain outside the bowstring's travel path, thereby enhancing safety during loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the user holds the bolt loader handles to load the bolt, then the loading operation can be performed, but the user's hands may be injured if the bowstring inadvertently releases during loading
Solution Approach 1:
The bolt loader uses a cylindrical geometry that positions the handles in a radial arrangement around the bolt axis. This dimensional arrangement ensures that when the user grasps the handles, their hands are positioned outside the cylindrical travel path of the bowstring, eliminating the harmful interaction while maintaining operational capability
2Ease of operation
If the handles are positioned to allow easy grasping, then ease of operation is improved, but the handles may be in the travel path of the bowstring causing injury
Solution Approach 1:
The bolt loader is divided into distinct functional segments: the cylindrical body that guides the bolt, the handles that the user grasps, and the implicit safety zone created by the geometry. This segmentation allows the handles to be positioned optimally for grasping while the cylindrical structure creates a safety buffer that prevents bowstring contact
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively prevents hand injuries by maintaining the handle outside the bowstring's path, ensuring safe loading of crossbow bolts even in case of crossbow malfunctions.
Implementation Method 1
The first hollow semi-cylinder and the second hollow semi-cylinder cooperate to define a hollow cylinder when the first member is in the first position with respect to the second member
Implementation Method 2
A pivot pin connects the first member to the second member such that the first and second members are rotatable with respect to each other about an axis
Data Source
AI summary
An apparatus for loading a crossbow includes a first member having a first portion defining a first handle and a second portion defining a first hollow semi-cylinder. A second member has a third portion defining a second handle and a fourth portion defining a second hollow semi-cylinder. The first and second members are rotatable with respect to each other about an axis. The first member is selectively rotatable with respect to the second member about the axis between a first position and a second position. The first hollow semi-cylinder and the second hollow semi-cylinder cooperate to define a hollow cylinder when the first member is in the first position with respect to the second member. The first hollow semi-cylinder and the second hollow semi-cylinder are separated when the first member is in the second position with respect to the second member.